A custom business app in a month — from €590 | NK Studio
Module — AI development

An app for your task in a month, not half a year

Fleet tracking for a car rental, client bookings, orders and stock, a client portal — everything you now run in spreadsheets, notebooks and chats. We describe the task together, AI writes the code, we design and verify. Works on the phone and on the computer.

Fill in the brief: within three days you get a plan, the development cost and what the app will cost per month.

from €590 one-offExact price in the plan after the brief. First version in a week, launch within a month.
First version in 7 daysLaunch within a monthCode and data are yoursPhone and desktop
Lead Catcher: our CRM, built the same way

Where a business loses time without its own app

Records in spreadsheets and notebooks

Which cars are free, who has paid, when it is due back: it all sits in one person's head or in an Excel file nobody updates in time. One mistake costs a client.

Ready-made services are not about you

A typical program has twenty features, you need three, and the one you installed it for is missing. You pay for the surplus and bend the business around the software.

Development looked out of reach

Agencies quoted months and tens of thousands of euros. Now AI writes most of the code and we own the task definition, testing and launch. A small app has become affordable.

What you get in a month

An app for your task

One task solved end to end: records, bookings, orders, a client portal, an internal tool for staff. As many screens as needed and none “for later”.

On the phone and on the computer

Opens in the browser and installs on the phone's home screen like a regular app, with notifications. Publishing to the App Store and Google Play is separate, if it is really needed.

Connected to what you already use

WhatsApp and Telegram for notifications, calendar, payments, Google Sheets, your website or CRM. No manual copying of data.

A clear monthly cost

Domain, server and database are set up in your name and paid directly to the services, no markup from us. Usually €0 to €40 a month, exact figures in the plan.

Code and data are yours

After launch we hand over the whole project: a GitHub repository or the project folder, access to every service. You can move to another developer at any time.

Support if you want it

€90 a month: we keep it running, update the services, make small changes. Cancel any month.

We have already done it for ourselves

13screens: leads, clients, tasks, reports, broadcasts, settings
5messengers connected to the AI agent inside the app
24/7the agent answers clients without days off or night breaks

Lead Catcher runs for the studio's clients. Its screens are on the CRM module page.

From €590 once, then the app is yours

Module “AI development”
from €590one-off · exact price in the plan

The cost depends on the task: how many screens, which integrations, how many people will use it. We name the figure in the plan after the brief, before any work starts.

Prices exclude VAT; +21 % for clients in Spain.

  • App plan and estimate three days after the brief
  • First working version in a week
  • Changes and improvements until the end of the month
  • Works on the phone and on the computer
  • Integrations with WhatsApp, Telegram, calendar, payments
  • Handover of code, access and instructions
  • Domain, server and database on your accounts, no markup
Fill in the brief
Optional
€90per month · support after launch

We keep everything running, update the services and make small changes. Larger improvements are estimated separately.

  • Monitoring and updates
  • Up to two hours of changes a month
  • Reply within a working day
  • Cancel any month
Discuss support

Server, domain and database are set up in your name: usually €0 to €40 a month paid directly to the services. Our support after launch is optional and can be cancelled any month.

How the month goes

Days 1–3. Brief and plan

You answer eight questions in the brief below. We clarify details on a call and send the plan: screens, integrations, what goes into the first version, development cost and monthly cost.

Days 4–10. First version

AI writes the code to the plan, we design the screens and verify every function. In a week you open the app on your phone and try it on real data.

Days 11–28. Changes and improvements

You use it and tell us what is inconvenient and what is missing. We iterate until the app becomes part of your working day.

Day 30. Handover

We move the project to your accounts: domain, server, database. You get the code, access and a short guide. Then either support at €90 a month or the app entirely in your hands.

What can be added to the app

Modules are added separately and at any time. If the app is internal and does not touch clients, you do not need them.

Answers to common questions

Both. The app opens in the browser on a computer and installs on the phone's home screen, where it works like a regular app with notifications. Publishing to the App Store and Google Play is done separately if it is really needed: most business tasks do not require it.

Domain, server and database are set up on your accounts and paid directly to the services: usually €0 to €40 a month, the exact figure is in the plan. Our support at €90 a month is optional and can be cancelled at any time.

You do. After launch we hand over a GitHub repository or the project folder, access to every service and a guide. You can continue with us, with another developer, or change nothing for years.

AI writes most of the code and takes the routine. We describe the task, design the screens, verify every function on real data and answer for the result. That is why a small app costs hundreds of euros, not tens of thousands.

Marketplaces, fintech and anything requiring licences, games, large mobile apps published in the stores, integrations with closed government systems. If your task is one of these, we say so at once and suggest where to go.

Write to us: small changes are covered by support, larger ones are estimated separately. The app is designed to be extended, not rewritten.

We work across Europe online: brief, a call, testing by link. The app can be in any language or several.

Tell us about the task, we send a plan and an estimate

Step 1 of 3
Who will use it?
Where should it open?
What should it connect to?
How many people will use it?
When do you need it?
Development budget

Where to send the plan

Discuss a project